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dc.contributor.author정규선-
dc.date.accessioned2018-02-22T09:51:58Z-
dc.date.available2018-02-22T09:51:58Z-
dc.date.issued2011-10-
dc.identifier.citationNUCLEAR FUSION , 51, 10, 103027en_US
dc.identifier.issn0029-5515-
dc.identifier.urihttp://iopscience.iop.org/article/10.1088/0029-5515/51/10/103027/meta-
dc.identifier.urihttp://hdl.handle.net/20.500.11754/40111-
dc.description.abstractThe initial phase wall conditioning in KSTAR is depicted. The KSTAR wall conditioning procedure consists of vessel baking, glow discharge cleaning (GDC), ICRH wall conditioning (ICWC) and boronization (Bz). Vessel baking is performed for the initial vacuum conditioning in order to remove various kinds of impurities including H(2)O, carbon and oxygen and for the plasma operation. The total outgassing rates after vessel baking in three successive KSTAR campaigns are compared. GDC is regularly performed as a standard wall cleaning procedure. Another cleaning technique is ICWC, which is useful for inter-shot wall conditioning under a strong magnetic field. In order to optimize the operation time and removal efficiency of ICWC, a parameter scan is performed. Bz is a standard technique to remove oxygen impurity from a vacuum vessel. KSTAR has used carborane powder which is a non-toxic boron-containing material. The KSTAR Bz has been successfully performed through two campaigns: water and oxygen levels in the vacuum vessel are reduced significantly. As a result, KSTAR has achieved its first L-H mode transition, although the input power was marginal for the L-H transition threshold. The characteristics of boron-containing thin films deposited for boronization are investigated.en_US
dc.description.sponsorshipThe authors would like to thank Dr G.L. Jackson, Dr V. Rohde and Professor Dr J. Winter for their valuable guidance, advice and comments on the wall conditioning techniques and procedures. Also the authors thank the referees who have given very helpful, useful and constructive comments to improve the paper. This study is supported by the Korean Ministry of Education, Science and Technology under the KSTAR project (Nos 2009-0082706 and 2010-0020044).en_US
dc.language.isoenen_US
dc.publisherINT ATOMIC ENERGY AGENCY, WAGRAMERSTRASSE 5, PO BOX 100, A-1400 VIENNA, AUSTRIAen_US
dc.titleInitial phase wall conditioning in KSTARen_US
dc.typeArticleen_US
dc.relation.no10-
dc.relation.volume51-
dc.identifier.doi10.1088/0029-5515/51/10/103027-
dc.relation.page--
dc.relation.journalNUCLEAR FUSION-
dc.contributor.googleauthorHong, Suk-Ho-
dc.contributor.googleauthorKim, Kwang-Pyo-
dc.contributor.googleauthorKim, Sungwoo-
dc.contributor.googleauthorSun, Jong-Ho-
dc.contributor.googleauthorLee, Dong-Su-
dc.contributor.googleauthorWoo, Hyun-Jong-
dc.contributor.googleauthorLee, Sang-Yong-
dc.contributor.googleauthorLee, Sang-Hwa-
dc.contributor.googleauthorPark, Eun-Kyung-
dc.contributor.googleauthorChung, Kyu-Sun-
dc.relation.code2011207167-
dc.sector.campusS-
dc.sector.daehakCOLLEGE OF ENGINEERING[S]-
dc.sector.departmentDIVISION OF ELECTRICAL AND BIOMEDICAL ENGINEERING-
dc.identifier.pidkschung-
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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